FEATURES
· Micropower Operation: 500 μA at 3 V VDD
· Fast Update Rate: 188 kSPS
· Power-On Reset to Zero
· 2.7-V to 5.5-V Analog Power Supply
· 8-Bit Monotonic
· I2C™ Interface up to 3.4 Mbps
· Data Transmit Capability
· Rail-to-Rail Output Buffer Amplifier
· Double-Buffered Input Register
· Address Support for up to Sixteen DAC5573s
· Synchronous Update for up to 64 Channels
· Voltage Translators for all Digital Inputs
· Operation From –40°C to 105°C
· Small 16 Lead TSSOP Package

APPLICATIONS
· Process Control
· Data Acquisition Systems
· Closed-Loop Servo Control
· PC Peripherals
· Portable Instrumentation

DESCRIPTION
The DAC5573 is a low-power, quad channel, 8-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing. The
DAC5573 utilizes an I2C-compatible two-wire serial
interface supporting high-speed interface mode with
address support of up to sixteen DAC5573s for a total
of 64 channels on the bus.
The DAC5573 requires an external reference voltage
to set the output range of the DAC. The DAC5573
incorporates a power-on-reset circuit that ensures
that the DAC output powers up at zero volts and
remains there until a valid write takes place in the
device. The DAC5573 contains a power-down fea-
ture, accessed via the internal control register, that
reduces the current consumption of the device to 200
nA at 5 V.
The low power consumption of this part in normal
operation makes it ideally suited to portable battery
operated equipment. The power consumption is less
than 3 mW at VDD = 5 V reducing to 1 μW in
power-down mode.
The DAC5573 is available in a 16-lead TSSOP
package.